TY - GEN
T1 - Seismic Fragility Evaluation of Retrofitted Low-Rise RC Structures
AU - Noureldin, Mohamed
AU - Kim, Jinkoo
N1 - Publisher Copyright:
© 2020, Springer Nature Switzerland AG.
PY - 2020
Y1 - 2020
N2 - In this research, a seismic fragility evaluation is used to assess the seismic performance of low-rise RC structures retrofitted with self-centering post-tensioned pre-cast concrete (SC-PC) frame with enlarged beam-ends. The seismic performance of the retrofitted structures is verified by constructing fragility curves for the retrofitted and retrofitted structure. Thirty natural time-history earthquake records are generated based on a design response spectrum to construct the seismic fragility curves. Nonlinear time history (NLTH) analysis is used to obtain the median structural demand. Limit states are defined based on seismic guidelines to represent the median structural capacity. The relation between the demand and capacity is modeled as a lognormal cumulative density function in a closed-form equation. The results of the study show that the SC-PC frame is effective in seismic retrofitting and significantly improves the structure seismic fragility for all limit states. In addition, the results show that the most significant improvement is found for the collapse-prevention limit state where severe earthquakes are expected.
AB - In this research, a seismic fragility evaluation is used to assess the seismic performance of low-rise RC structures retrofitted with self-centering post-tensioned pre-cast concrete (SC-PC) frame with enlarged beam-ends. The seismic performance of the retrofitted structures is verified by constructing fragility curves for the retrofitted and retrofitted structure. Thirty natural time-history earthquake records are generated based on a design response spectrum to construct the seismic fragility curves. Nonlinear time history (NLTH) analysis is used to obtain the median structural demand. Limit states are defined based on seismic guidelines to represent the median structural capacity. The relation between the demand and capacity is modeled as a lognormal cumulative density function in a closed-form equation. The results of the study show that the SC-PC frame is effective in seismic retrofitting and significantly improves the structure seismic fragility for all limit states. In addition, the results show that the most significant improvement is found for the collapse-prevention limit state where severe earthquakes are expected.
UR - https://www.scopus.com/pages/publications/85102203869
U2 - 10.1007/978-3-030-34252-4_1
DO - 10.1007/978-3-030-34252-4_1
M3 - Conference contribution
AN - SCOPUS:85102203869
SN - 9783030342517
T3 - Sustainable Civil Infrastructures
SP - 1
EP - 12
BT - Innovative Solutions for Soil Structure Interaction - Proceedings of the 3rd GeoMEast International Congress and Exhibition, Egypt 2019 on Sustainable Civil Infrastructures – The Official International Congress of the Soil-Structure Interaction Group in Egypt SSIGE
A2 - El-Naggar, Hany
A2 - El-Zahaby, Khalid
A2 - Shehata, Hany
PB - Springer Science and Business Media B.V.
T2 - 3rd GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, GeoMEast 2019
Y2 - 10 November 2019 through 15 November 2019
ER -
